Half to ernest tinger



(No Model.) 7

- E PINKBEINER.

. GLUTGH FOR ARC LAMPS No. 575,341. Patented Jan. 19, 1897.

Erica,

PATENT 1i EUGENE FINKBEINER, OF BROOKLYN, NEW YORK, ASSIGNOR OF ONE- IIALF TO ERNEST IINGER, OF NEW' YORK, N. Y.

CLUTCH FOR ARC-LAMPS.

SPECIFICATION forming part of Letters Patent No. 575,341, dated January 19, 1897.

Application filed July 27, 1896. Serial No. 600,672. (No modehl To all whom it may concern:

Be it known that I, EUGENE FINKBEINER, a citizen of the United States, and a resident of Brooklyn, Kings county, State of New York, have invented certain new and useful Improvements in Clutches for Electric-Arc Lamps, of which the followingis a specification.

My invention relates to that type of electric lamps known as the arc-lamp, where the light is obtained by the passage of the electric current between the points of two separated electrodes.

The object of the invention is to devise simple and efficient means for regulating the voltaic are so as to automatically preserve the necessary distance between the pencils of carbon.

The invention comprises a novel clutch mechanism operating to separate the carbon points to establish the voltaic are and to feed 1 forward one of the electrodes as they are consumed in the operation of the lamp.

My invention is illustrated in the accompanying drawings, in which the same parts are indicated by the same referencen1m1erals in the several views, and wherein Figure 1 is a central sectional elevation of an electric-arc lamp embodying my improvements. Fig. 2 is a side elevation of my improved clutch mechanism detached from the lamp. Fig. 8 is an end view of Fig. 2, partly in section, and showing also part of the lampframe in section; and Fig. 4 is a sectional plan view on the line 4 4 of Fig. 1.

Referring to the drawings, 5 indicates the frame of the lamp, provided with the shelf 0, having a central opening through which the upper-carbon-holding rod is adapted to pass, and with the cap 7, having a central portion 8, resting on the members of the frame, to which certain parts-of the operating mechanism are secured. Any desirable construction of frame may, however, be employed.

The upper-carbon-holdi11g rod is indicated at 9. It is square in cross-section, as indicated in Fig. 4E, and passes through an opening in a bracket 10, secured to an arm of the frame 5. Secured to the shelf 6 is a tube 11, flanged at its bottom and arranged so that its bore coincides with the opening in the shelf 6. The carbon-holding rod 9 passes through this tube, and a part of the clutch mechanism is connected with or mounted on said tube.

Hinged to studs 12, which are adjustably fixed in the members 5 of the lamp-frame, is the swinging carriage 13, provided with extended levers 14: 1t". The outer end of lever 11 is connected to the core 15 of helix 15, and the outer end of lever 14 to the rod of a piston operating within cylinder 16, the latter device acting as a dash-pot to prevent sudden jarring movem entsin the mechanism. The helix, as well as the cylinder 10, is suitably supported on the frame of the lamp, as indicated.

The top of tube 11 is enlarged, as shown at 11, and this enlarged portion is provided at the bottom with a circular recess whose inner walls are the same as the outer walls of tube 11. The circular block 17 is adapted to slide on tube 11 and to enter said recess inthe bottom of the enlargement at the top of tube 11.

18 is a screw seated in block 17 and entering a vertical slot in tube 11 to keep said block in proper position on the tube. In opposite sides of block 17 there are secured the pins 19, which rest upon the side bars of the swinging carriage 13; to one side of the studs upon which said carriage is hinged, said block serving as a suitable connection between pins 19.

Suitably j ournaled in the opening at the top of enlargement 11 are the eccentrics 2O 20*, between which the upper-carbon-holding rod 9 is adapted to pass. 011 the opposite sides of enlargement 11 there are fulcrumed to the ends of the spindles of the eccentrics 2O 20 the lovers 21 21, which are provided in their outer ends with elongated slots (see Fig. 2) engaging with the pins 19 19 in the sides of block 17, which pins rest on the side bars of the swinging carriage 13. In Fig. 1 the clutch mechanism is shown as grasping the carbonholding rod 9. The upper carbon (indicated at 22) is clamped to its rod 9 by any suitable means, and the lower carbon (not shown) is to be held in a suitable socket. The top of enlargement 11 of the tube is closed by a cap 11 screwed in place.

When a current of electricity is passed through magnetizinghelix 15, the core 15, becoming n'iagnetized, is lifted, thereby raising lever end l-t of swinging carriage 13:3, and consequei'itly, through the medium oi pins 10 10, resting on said. carriage 13, causing" block 17, carrying said pins, to slide upward on tube 11. The mo'venient of the lovers 91 21, by reason of their engagement with pins 19 10, will so adjust the eccentrics 20 20 as to cause them to grasp the carbon-holding rod 9 and lift the same, thus separating the carbon points and establishing the electric are. As the length of the are becomes longer by the burning away of the carbons the resistance in the lamp increases and the core 15 will gradually descend, thus moving down lever end 1i of the carriage T13 and permitting pins 11,) 1.) to descend, thus swinging eccentrics 2t) 20 in the direction to lessen their grasp on the carbon-holding rod 0 and allowil'ig the carbon to feed downward to reiistablish the normal condition of the are, and the increased flow of the current lifting core 15 and with it lever end l-l; ol? carriage 13 the pins it) it?) will be again forced upward, thereby so swinging the eccentrics as to cause them to again firmly grasp the carlnm-holding rod 1').

llaving thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is

1. In a regulator forelectric-arc lamps, the combination with a tube through which the carbon-holding rod is adapted to pass, of a pair of eccentrics jourualed at the upper end of said tube, levers tulcrumcd to the respective spindles of said eccentrics and having, slots in their outer ends, a device adapted to i move vertically on said tube and having projection's passing through the slots of said levers, and a pivoted carriage supporting said projections.

2. In a regulator for electricarclamps, the

combination with a tube through which. the i .-arbon-holding rod is adapted to pass, of a 1 pair of eccentrics journaled at the upper end of said tube, levers li'ulcrumed to the .respective spindles of said eccentrics and having slots in their outer ends, a pair of pins suitably connected together to move vertically with. relation to said tube and missing through the slots of said levers, and a pivoted carriage on which said pins are supported.

3. In a regulator for electric-arc lamps, the combination with a tube through which the carborrholding rod is adapted to pass and a block adapted to slide on said tube, oi a pair of eccentrics journaled at the upper end of said tube, a pair of lovers fulcrunied to tho spindles of said eccentrics and having slots in their outer ends, a pair of pins connectial to aforesaid block in proper relation to said levers and passing through the slols thereol'. and a pivoted (atrriage on which said pins rest.

l.-. The combimittion with a tube through which the carlmn-holding rod is adapted to pass and. provided with an enlargennnit at the top having recesses above and below, and a block adapted to slide on said tube and to enter the recess at the bottom of said enlarge- 1nent,of a pair of eccentrics iournaled with in the recess at the top oi. said enlargement, |c- 'vcrs iulcruincd to the respective SpllltllOS olf said eccentrics and having elongated slots in their outer ends, a pair oi pins ctmncctral to aforesaid block and pnssi ng thrtnigh the slot s of said levers, and a pivoted carriage on which the pins of said block rest.

5. The combil'iation with a tube through which the carbon-holding rod is adapted to pass and a pair of eccentrics ,iournaled at the upper end of said tube, levers t'ulcrumed to the respective spindles of said eccei'itrics and having elongated slots in their outer ends, pins suitably connected. together to move verlicallv with relation to said tube, a carriage pivoted to swing on the lamp-frame and sun porting said pins and nrovided with end. lovers, a check or dash-pot connected with one ol. said levers and a helix and. its core the latter connected to the other oi. said. levers.

irligned atNew York, inv the con n ti; andv Sta t e of New York, this 13th davolt June *i EUGENE lflNKltl-Ilh hilt.

LIA 

